Multiple tables with node mysql-model?
I'm working on a project where I use mysql-model and I don't really understand how models work when we have multiple tables.
I have some code on my model user.js:
var mysqlcon = require('../models/db_connexion');
var User_model = mysqlcon.extend({
tableName: "users"
});
var log_user = new User_model();
Then a function to find the user's role:
module.exports.findUserRole = function(userId,callback){
let findUserRoleId = "SELECT role_id FROM users WHERE id = "+userId;
log_user.query(findUserRoleId,function(err,rows,fields){
let role_id = rows[0].role_id;
let findRolesInfo = "SELECT role_name,role_power FROM roles WHERE role_id = " + role_id;
log_user.query(findRolesInfo,callback)
})
And when I call this function, it returns me what I want, but I don't understand why.
My User_model isn't normally using only the table "users" ? So why can I also access to the table "roles" ?
I've searched on the npm documentation and googled it, but didn't found anything, or I missed it.
Thanks for your explanation.
And sorry if I missed something with the presentation, this is my first post.
mysql node.js model
edited Nov 28 '18 at 12:44
mihai
23.4k73968
asked Nov 21 '18 at 12:53
Ghostmoonk
62
add a comment |
I'm working on a project where I use mysql-model and I don't really understand how models work when we have multiple tables.
I have some code on my model user.js:
var mysqlcon = require('../models/db_connexion');
var User_model = mysqlcon.extend({
tableName: "users"
});
var log_user = new User_model();
Then a function to find the user's role:
module.exports.findUserRole = function(userId,callback){
let findUserRoleId = "SELECT role_id FROM users WHERE id = "+userId;
log_user.query(findUserRoleId,function(err,rows,fields){
let role_id = rows[0].role_id;
let findRolesInfo = "SELECT role_name,role_power FROM roles WHERE role_id = " + role_id;
log_user.query(findRolesInfo,callback)
})
And when I call this function, it returns me what I want, but I don't understand why.
My User_model isn't normally using only the table "users" ? So why can I also access to the table "roles" ?
I've searched on the npm documentation and googled it, but didn't found anything, or I missed it.
Thanks for your explanation.
And sorry if I missed something with the presentation, this is my first post.
mysql node.js model
edited Nov 28 '18 at 12:44
mihai
23.4k73968
asked Nov 21 '18 at 12:53
Ghostmoonk
62
add a comment |
I'm working on a project where I use mysql-model and I don't really understand how models work when we have multiple tables.
I have some code on my model user.js:
var mysqlcon = require('../models/db_connexion');
var User_model = mysqlcon.extend({
tableName: "users"
});
var log_user = new User_model();
Then a function to find the user's role:
module.exports.findUserRole = function(userId,callback){
let findUserRoleId = "SELECT role_id FROM users WHERE id = "+userId;
log_user.query(findUserRoleId,function(err,rows,fields){
let role_id = rows[0].role_id;
let findRolesInfo = "SELECT role_name,role_power FROM roles WHERE role_id = " + role_id;
log_user.query(findRolesInfo,callback)
})
And when I call this function, it returns me what I want, but I don't understand why.
My User_model isn't normally using only the table "users" ? So why can I also access to the table "roles" ?
I've searched on the npm documentation and googled it, but didn't found anything, or I missed it.
Thanks for your explanation.
And sorry if I missed something with the presentation, this is my first post.
mysql node.js model
edited Nov 28 '18 at 12:44
mihai
23.4k73968
asked Nov 21 '18 at 12:53
Ghostmoonk
62
I'm working on a project where I use mysql-model and I don't really understand how models work when we have multiple tables.
I have some code on my model user.js:
var mysqlcon = require('../models/db_connexion');
var User_model = mysqlcon.extend({
tableName: "users"
});
var log_user = new User_model();
Then a function to find the user's role:
module.exports.findUserRole = function(userId,callback){
let findUserRoleId = "SELECT role_id FROM users WHERE id = "+userId;
log_user.query(findUserRoleId,function(err,rows,fields){
let role_id = rows[0].role_id;
let findRolesInfo = "SELECT role_name,role_power FROM roles WHERE role_id = " + role_id;
log_user.query(findRolesInfo,callback)
})
And when I call this function, it returns me what I want, but I don't understand why.
My User_model isn't normally using only the table "users" ? So why can I also access to the table "roles" ?
I've searched on the npm documentation and googled it, but didn't found anything, or I missed it.
Thanks for your explanation.
And sorry if I missed something with the presentation, this is my first post.
mysql node.js model
mysql node.js model
edited Nov 28 '18 at 12:44
mihai
23.4k73968
asked Nov 21 '18 at 12:53
Ghostmoonk
62
edited Nov 28 '18 at 12:44
mihai
23.4k73968
asked Nov 21 '18 at 12:53
Ghostmoonk
62
edited Nov 28 '18 at 12:44
mihai
23.4k73968
edited Nov 28 '18 at 12:44
mihai
23.4k73968
edited Nov 28 '18 at 12:44
mihai
23.4k73968
23.4k73968
asked Nov 21 '18 at 12:53
Ghostmoonk
62
asked Nov 21 '18 at 12:53
Ghostmoonk
62
asked Nov 21 '18 at 12:53
Ghostmoonk
62
62
add a comment |
add a comment |
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